Hydraulic control device

Abstract

To provide a liquid pressure control device capable of suppressing enlargement of a housing.SOLUTION: This liquid pressure control device comprises: a motor that drives a pump; a housing having an outer surface and provided with a first hole opened in a first surface of the outer surface directed toward the motor to store the pump and two second holes opened in the outer surface with a gap between the two second holes in a first direction; and a current supply part that supplies current flowing through a through-hole penetrating the housing and opened in the first surface of the outer surface and in a second surface positioned opposite the first surface to drive the motor. The through-hole has a first part positioned between the two second holes. The width of the first part in the first direction is shorter than that of the first part in a second direction along the second surface and orthogonal to the first direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] Embodiments of the present invention relate to a hydraulic control device.

Background Art

[0002] Conventionally, a hydraulic control device for adjusting the pressure in a hydraulic circuit of a braking device has been known. The hydraulic control device has, for example, a housing provided with a hydraulic circuit and a plurality of holes. Various components such as a pump and a solenoid valve are attached to the plurality of holes. Further, a terminal extending from a motor that drives the pump passes through a through-hole provided in the housing and is connected to a control board (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional configuration, when the number of the terminals is large or the terminals are large, the through-hole becomes large. For this reason, when a predetermined distance is provided between the other holes and the through-hole, the housing becomes large.

[0005] Therefore, the present invention has been made in view of the above, and provides a hydraulic control device capable of suppressing an increase in the size of a housing.

Means for Solving the Problems

[0006] The hydraulic control device according to an embodiment of the present invention, as an example, includes a pump, a motor that drives the pump, has an outer surface, and has a first hole that opens on a first surface facing the motor of the outer surface and houses the pump, and opens on the outer surface and is separated from the first hole , housing the solenoid valveThe hydraulic control device comprises a housing having two second holes, the two second holes being spaced apart in a first direction, and a current supply unit through which a current for driving the motor flows, passing through a through-hole that penetrates the housing and opens to the first surface and the second surface on the opposite side of the outer surface, the through-hole having a first portion located between the two second holes, the width of the first portion in the first direction being shorter than the width of the first portion in the second direction which is along the second surface and perpendicular to the first direction. Therefore, as an example, the hydraulic control device can increase the number of conductors in the current supply unit and increase the spacing between the conductors without increasing the width of the through-hole in the first direction. Consequently, the hydraulic control device can suppress an increase in the distance between the two second holes. In addition, the second hole can be positioned closer to the first hole compared to the case where the through-hole is positioned between the first and second holes. For example, for the reasons mentioned above, hydraulic control devices can avoid increasing the size of their housings. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic cross-sectional view showing a hydraulic control device according to the first embodiment. [Figure 2] Figure 2 is a perspective view showing the housing of the first embodiment. [Figure 3] Figure 3 is a front view showing the housing of the first embodiment. [Figure 4] Figure 4 is a rear view showing the housing of the first embodiment. [Figure 5] Figure 5 is a schematic perspective view showing the motor and harness of the first embodiment. [Figure 6] Figure 6 is a schematic cross-sectional view showing the housing, motor, and harness of the first embodiment. [Figure 7] Figure 7 is a schematic perspective view showing the housing and harness according to the second embodiment in an exploded state. [Modes for carrying out the invention]

[0008] (First Embodiment) The first embodiment will be described below with reference to Figures 1 to 6. In this specification, the vertically upward direction is generally defined as the upward direction, and the vertically downward direction as the downward direction. Furthermore, in this specification, the components of the embodiment and their descriptions may be described using multiple expressions. The components and their descriptions are examples and are not limited by the expressions used in this specification. Components may also be identified by names different from those used in this specification. Furthermore, components may also be described using expressions different from those used in this specification.

[0009] Figure 1 is a schematic cross-sectional view of a hydraulic control device 10 according to a first embodiment. The hydraulic control device 10 is mounted on a vehicle such as an automobile. The hydraulic control device 10 adjusts the pressure (hydraulic pressure) in the fluid passages of the vehicle's brake system. Note that the hydraulic control device 10 is not limited to this example.

[0010] As shown in each drawing, the X, Y, and Z axes are defined herein for convenience. The X, Y, and Z axes are orthogonal to each other. The X axis is provided along the width of the hydraulic control device 10. The Y axis is provided along the thickness of the hydraulic control device 10. The Z axis is provided along the height of the hydraulic control device 10.

[0011] Furthermore, the X, Y, and Z directions are defined herein. The X direction is the direction along the X axis and includes the +X direction indicated by the X-axis arrow and the -X direction which is the opposite direction of the X-axis arrow. The Y direction is the direction along the Y axis and includes the +Y direction indicated by the Y-axis arrow and the -Y direction which is the opposite direction of the Y-axis arrow. The Z direction is the direction along the Z axis and includes the +Z direction (up) indicated by the Z-axis arrow and the -Z direction (down) which is the opposite direction of the Z-axis arrow.

[0012] The hydraulic control device 10 includes a housing 11, a pump 12, a motor 13, an electronic control unit (ECU) 14, and a harness 15. The harness 15 is an example of a current supply unit.

[0013] The housing 11 is, for example, a substantially rectangular parallelepiped block made of metal or synthetic resin. Note that the housing 11 is not limited to this example. The pump 12, the motor 13, the ECU 14, and the harness 15 are attached to the housing 11.

[0014] FIG. 2 is a perspective view showing the housing 11 of the first embodiment. FIG. 3 is a front view showing the housing 11 of the first embodiment. FIG. 4 is a rear view showing the housing 11 of the first embodiment.

[0015] As shown in FIG. 4, the hydraulic control device 10 further includes a plurality of solenoid valves 16, a plurality of pressure sensors 17, and a plurality of reservoirs 18. The solenoid valves 16, the pressure sensors 17, and the reservoirs 18 are also attached to the housing 11.

[0016] The housing 11 has an outer surface 20. The outer surface 20 is the surface of the housing 11 facing the outside of the housing 11. The outer surface 20 has a first mounting surface 21 in FIG. 3, a second mounting surface 22 in FIG. 4, an upper surface 23, and a lower surface 24. The first mounting surface 21 is an example of a first surface. The second mounting surface 22 is an example of a second surface.

[0017] As shown in FIG. 1, the first mounting surface 21 is formed substantially flat and faces in the +Y direction. The second mounting surface 22 is located on the opposite side of the first mounting surface 21. The second mounting surface 22 is formed substantially flat and faces in the -Y direction. The upper surface 23 is formed substantially flat and faces in the +Z direction. The lower surface 24 is located on the opposite side of the upper surface 23. The lower surface 24 is formed substantially flat and faces in the -Z direction.

[0018] As shown in FIG. 4, the housing 11 is provided with a pump mounting hole 31, a plurality of valve mounting holes 32, a plurality of sensor mounting holes 33, a plurality of reservoir mounting holes 34, a plurality of flow paths 35, and a through hole 36. The pump mounting hole 31 is an example of the first hole. Other holes such as holes used for attachment may be provided in the housing 11.

[0019] As shown in FIG. 2, the pump mounting hole 31 opens to the first mounting surface 21. The pump mounting hole 31 is a recess that depresses in the substantially -Y direction from the first mounting surface 21. The pump mounting hole 31 opens to the first mounting surface 21 at substantially the center of the first mounting surface 21.

[0020] As shown in FIG. 4, the plurality of valve mounting holes 32 and the plurality of sensor mounting holes 33 open to the second mounting surface 22. The plurality of reservoir mounting holes 34 open to the lower surface 24. The flow path 35 opens to the upper surface 23. That is, the valve mounting holes 32, the sensor mounting holes 33, the reservoir mounting holes 34, and the flow path 35 open to the outer surface 20.

[0021] The valve mounting holes 32 and the sensor mounting holes 33 are recesses that depresses in the substantially +Y direction from the second mounting surface 22. The reservoir mounting holes 34 are recesses that depresses in the substantially +Z direction from the lower surface 24. Note that the valve mounting holes 32, the sensor mounting holes 33, and the reservoir mounting holes 34 may penetrate the housing 11.

[0022] The valve mounting holes 32, the sensor mounting holes 33, and the reservoir mounting holes 34 are spaced apart from each other and also spaced apart from the pump mounting hole 31. The plurality of valve mounting holes 32 and the plurality of sensor mounting holes 33 are arranged spaced apart from each other so as to surround the pump mounting hole 31. Note that the pump mounting hole 31, the valve mounting holes 32, the sensor mounting holes 33, and the reservoir mounting holes 34 may communicate with each other.

[0023] The multiple valve mounting holes 32 include two valve mounting holes 32A and 32B. Valve mounting holes 32A and 32B are an example of a second hole. The two valve mounting holes 32A and 32B are located below the pump mounting hole 31. The two valve mounting holes 32A and 32B are aligned with a gap in the X direction. The X direction is an example of a first direction.

[0024] In this embodiment, the housing 11 is provided with two reservoir mounting holes 34. The two reservoir mounting holes 34 are spaced apart from each other in the X direction. The distance between the two reservoir mounting holes 34 is longer than the distance between the two valve mounting holes 32A and 32B.

[0025] Multiple flow paths 35 communicate with the fluid passages of the vehicle's brake system. Each of the multiple flow paths 35 connects at least one corresponding pump mounting hole 31, valve mounting hole 32, sensor mounting hole 33, and reservoir mounting hole 34 to the fluid passages of the brake system. Note that the flow paths 35 are not limited to this example. Furthermore, flow paths connecting the valve mounting hole 32, sensor mounting hole 33, and reservoir mounting hole 34 to each other may be provided inside the housing 11.

[0026] As shown in Figure 1, the through-hole 36 penetrates the housing 11 in approximately the Y direction. Therefore, the through-hole 36 opens to the first mounting surface 21 and the second mounting surface 22. The Y direction is just one example of a through-direction. The through-hole 36 is located below the pump mounting hole 31. The through-hole 36 is spaced apart from the pump mounting hole 31, the valve mounting hole 32, the sensor mounting hole 33, the reservoir mounting hole 34, and the flow path 35.

[0027] The pump 12 is housed in the pump mounting hole 31. The pump 12 is, for example, a gear pump. However, the pump 12 may be of other types. The pump 12 can, for example, supply hydraulic fluid to the fluid passage of the brake device through the flow path 35.

[0028] Motor 13 is, for example, a three-phase brushless motor. Motor 13 may be of other types. Motor 13 comprises a casing 41, a stator 42, a rotor 43, and a drive shaft 44.

[0029] The casing 41 is attached to the first mounting surface 21 of the housing 11, for example, by screws. Therefore, the first mounting surface 21 faces the motor 13. The casing 41 covers the pump mounting hole 31 and the through hole 36.

[0030] A sealing material 45 is provided between the casing 41 and the first mounting surface 21. As shown in Figure 3, the sealing material 45 surrounds the pump mounting hole 31 and the through hole 36. Therefore, the sealing material 45 liquid-tightly seals the space between the casing 41 and the first mounting surface 21.

[0031] As shown in Figure 1, the stator 42 is located inside the casing 41 and is fixed to the casing 41. The rotor 43 is located inside the stator 42. The rotor 43 is coupled to the drive shaft 44.

[0032] When a drive current flows through the stator 42, the rotor 43 and the drive shaft 44 rotate integrally around the central axis Ax. In other words, the drive current drives the motor 13. The central axis Ax is, for example, the central axis of the drive shaft 44. The central axis Ax extends approximately in the Y direction.

[0033] A gear 46 is provided on the drive shaft 44. For example, a coupling 47 transmits rotation between the gear 46 and the gear of the pump 12. As a result, the motor 13 drives the pump 12 by rotating the drive shaft 44. Note that the motor 13 is not limited to this example. The motor 13 may have an eccentric shaft that is eccentric from the central axis Ax instead of a gear 46.

[0034] The ECU 14 comprises a casing 51 and a circuit board 52. The casing 51 is attached to the second mounting surface 22 of the housing 11, for example, by screws. The circuit board 52 is located between the casing 51 and the second mounting surface 22 and is covered by the casing 51.

[0035] The circuit board 52 includes, for example, a substrate and various electronic components mounted on the substrate. Furthermore, the circuit board 52 is electrically connected to, for example, a motor 13, a solenoid valve 16, and a pressure sensor 17, and controls the entire hydraulic control device 10.

[0036] Figure 5 is a schematic perspective view showing the motor 13 and harness 15 of the first embodiment. The harness 15 has a sleeve 61 and a plurality of terminals 62. The terminals 62 are examples of conductors.

[0037] The sleeve 61 protrudes from the motor 13 in approximately the -Y direction. The sleeve 61 is made of, for example, synthetic resin and is insulating. The sleeve 61 may be integrally formed with the portion of the motor 13 casing 41 made of synthetic resin. The sleeve 61 has a predetermined rigidity and can be prevented from bending due to gravity and predetermined external forces. The sleeve 61 covers, for example, the conductors connected to the stator 42 of the motor 13. The sleeve 61 has a substantially quadrilateral cross-section extending approximately in the Z direction.

[0038] As shown in Figure 1, the sleeve 61 has a lower surface 61a, an upper surface 61b, and a tip 61c. The lower surface 61a is formed to be substantially flat and faces approximately in the -Z direction. The upper surface 61b is located on the opposite side of the lower surface 61a. The upper surface 61b is formed to be substantially flat and faces approximately in the +Z direction. The tip 61c is the end of the sleeve 61 in the -Y direction. The corners between the tip 61c and the lower surface 61a, and the corners between the tip 61c and the upper surface 61b, are, for example, curved surfaces with rounded edges.

[0039] Terminal 62 protrudes from the tip portion 61c in approximately the -Y direction. Terminal 62 is, for example, a metal plate. Terminal 62 is electrically connected to the stator 42 via a conductor covered by the sleeve 61.

[0040] In this embodiment, the harness 15 has three terminals 62. The three terminals 62 are arranged with spacing in the Z direction. The Z direction is along the second mounting surface 22 and perpendicular to the X direction, and is an example of the second and third directions.

[0041] The sleeve 61 extends approximately in the Y direction through the through hole 36. The terminal 62 is electrically connected to the circuit board 52 of the ECU 14. For example, the terminal 62 is connected to a connector on the circuit board 52. The ECU 14 supplies drive current to the motor 13 through the terminal 62 and the conductor covered by the sleeve 61. That is, a drive current that drives the motor 13 flows through the harness 15.

[0042] In this embodiment, the motor 13 does not have a sensor. Therefore, the harness 15 carries the drive current (drive signal). However, the harness 15 may have wires that carry other electrical signals, such as detection signals from a sensor. Also, the hydraulic pressure control device 10 may have other harnesses that carry other electrical signals.

[0043] The solenoid valve 16 in Figure 4 is, for example, a solenoid valve. Multiple solenoid valves 16 are housed in corresponding valve mounting holes 32. The solenoid valves 16 adjust the flow rate of hydraulic fluid flowing through the passage 35 and the fluid passage of the brake device, or change the path through which the hydraulic fluid flows.

[0044] Multiple pressure sensors 17 are housed in corresponding sensor mounting holes 33. The pressure sensors 17 detect the fluid pressure in the corresponding flow path. Multiple reservoirs 18 are housed in corresponding reservoir mounting holes 34. The reservoirs 18 can store hydraulic fluid.

[0045] The following description will provide a more detailed explanation of the through-hole 36 and the harness 15. As shown in Figure 3, the through-hole 36 has a first portion 71 and a second portion 72. The first portion 71 and the second portion 72 are each part of the through-hole 36 and are aligned in the Y direction.

[0046] Figure 6 is a schematic cross-sectional view showing the housing 11, motor 13, and harness 15 of the first embodiment. As shown in Figure 6, the first portion 71 opens to the second mounting surface 22. The first portion 71 may be spaced apart from the second mounting surface 22. In this case, the through hole 36 is located between the first portion 71 and the second mounting surface 22 and has other portions that open to the second mounting surface 22. The second portion 72 communicates with the first portion 71 and opens to the first mounting surface 21. That is, the first portion 71 is provided closer to the second mounting surface 22 than the second portion 72. The through hole 36 may have other portions between the first portion 71 and the second portion 72.

[0047] The first portion 71 has a minimum portion 81, an inner portion 82, a tapered portion 83, and an outer portion 84. The minimum portion 81 is an example of the first portion. The inner portion 82 is an example of the second portion. The minimum portion 81, the inner portion 82, the tapered portion 83, and the outer portion 84 are each part of the first portion 71 and are arranged in the Y direction. In other words, the minimum portion 81, the inner portion 82, and the tapered portion 83 are arranged side by side in the Y direction. Note that the tapered portion 83 may be omitted from the first portion 71.

[0048] The smallest portion 81 is the part of the first portion 71 with the smallest passage area. The passage area of ​​the through hole 36 including the first portion 71 is the area of ​​the cross-section of the through hole 36 perpendicular to the Y direction in which the through hole 36 extends.

[0049] As shown in Figure 4, the cross-section of the minimum portion 81 has a shape substantially similar to that of the sleeve 61. The passage area of ​​the minimum portion 81 is slightly larger than the cross-sectional area of ​​the sleeve 61. That is, the cross-section of the minimum portion 81 is formed in a substantially quadrilateral shape extending substantially in the Z direction. Therefore, the sleeve 61 can pass through the minimum portion 81 and can be fitted into the minimum portion 81. The passage area of ​​the minimum portion 81 is substantially constant.

[0050] The inner surface of the smallest part 81 has a bottom surface 81a, a top surface 81b, and two side surfaces 81c. The bottom surface 81a is an example of a third surface. The top surface 81b is an example of a fourth surface. The inner surface of the smallest part 81 may further have corners connecting the bottom surface 81a, the top surface 81b, and the side surfaces 81c.

[0051] The lower surface 81a is formed to be approximately flat and faces approximately in the +Z direction. The upper surface 81b is spaced apart from the lower surface 81a in the +Z direction, which is the direction facing the lower surface 81a. The upper surface 81b is formed to be approximately flat and faces approximately in the -Z direction. Therefore, the upper surface 81b faces the lower surface 81a and is closer to the pump mounting hole 31 than the lower surface 81a. The side surface 81c is formed to be approximately flat and faces approximately in the X direction. The side surface 81c connects the end of the lower surface 81a and the end of the upper surface 81b.

[0052] As shown in Figures 3 and 4, the cross-sections of the inner portion 82, the tapered portion 83, and the outer portion 84 are formed in a roughly quadrilateral shape extending in the approximate Z direction. Note that the cross-sections of the inner portion 82, the tapered portion 83, and the outer portion 84 do not have to be similar to the cross-section of the minimum portion 81. Also, the cross-sections of the inner portion 82, the tapered portion 83, and the outer portion 84 may be other shapes, such as an ellipse.

[0053] As shown in Figure 6, the inner portion 82 is closer to the first mounting surface 21 than the minimum portion 81. The inner portion 82 is connected to the second portion 72. The passage area of ​​the inner portion 82 is larger than the passage area of ​​the minimum portion 81. The passage area of ​​the inner portion 82 is approximately constant.

[0054] As shown in Figure 3, the inner surface of the inner portion 82 has a lower surface 82a, an upper surface 82b, and two side surfaces 82c. The lower surface 82a is an example of a fifth surface. The upper surface 82b is an example of a sixth surface. The inner surface of the inner portion 82 may further have corners connecting the lower surface 82a, the upper surface 82b, and the side surfaces 82c.

[0055] The lower surface 82a is formed to be approximately flat and faces approximately in the +Z direction. The upper surface 82b is spaced apart from the lower surface 82a in the +Z direction. The upper surface 82b is formed to be approximately flat and faces approximately in the -Z direction. Therefore, the upper surface 82b faces the lower surface 82a and is closer to the pump mounting hole 31 than the lower surface 82a. The side surface 82c is formed to be approximately flat and faces approximately in the X direction. The side surface 82c connects the end of the lower surface 82a and the end of the upper surface 82b.

[0056] In this embodiment, the center of the minimum portion 81 is further away from the pump mounting hole 31 than the center of the inner portion 82. In other words, the minimum portion 81 is off-center relative to the inner portion 82. Therefore, in the Z direction, the distance between the lower surface 81a of the minimum portion 81 and the lower surface 82a of the inner portion 82 is shorter than the distance between the upper surface 81b of the minimum portion 81 and the upper surface 82b of the inner portion 82. In other words, the step difference between the minimum portion 81 and the inner portion 82 is greater on the side closer to the pump mounting hole 31 than on the opposite side in the Z direction intersecting the Y direction.

[0057] In this embodiment, the distance between the lower surface 81a of the minimum portion 81 and the lower surface 82a of the inner portion 82 in the Z direction is almost zero. In other words, the lower surface 81a of the minimum portion 81 and the lower surface 82a of the inner portion 82 are located on substantially the same plane.

[0058] The tapered portion 83 is located between the minimum portion 81 and the inner portion 82. The tapered portion 83 narrows from the inner portion 82 towards the minimum portion 81. In other words, the passage area of ​​the tapered portion 83 decreases as it moves from the inner portion 82 towards the minimum portion 81.

[0059] The inner surface of the tapered portion 83 has a lower surface 83a, an upper surface 83b, and two side surfaces 83c. The lower surface 83a is an example of a seventh surface. The inner surface of the tapered portion 83 may further have corners connecting the lower surface 83a, the upper surface 83b, and the side surfaces 83c.

[0060] The lower surface 83a is continuous with the lower surface 81a of the minimum portion 81. Therefore, the lower surface 83a is formed to be approximately flat and oriented approximately in the +Z direction. The upper surface 83b is spaced apart from the lower surface 83a in the +Z direction. The upper surface 83b extends diagonally between the end of the upper surface 81b of the minimum portion 81 and the end of the upper surface 82b of the inner portion 82. The side surface 83c extends diagonally between the end of the side surface 81c of the minimum portion 81 and the end of the side surface 82c of the inner portion 82.

[0061] As shown in Figure 6, the outer portion 84 is closer to the second mounting surface 22 than the minimum portion 81. The outer portion 84 is connected to the minimum portion 81 and opens to the second mounting surface 22. The passage area of ​​the outer portion 84 is larger than the passage area of ​​the minimum portion 81. The center of the outer portion 84 and the center of the minimum portion 81 are approximately coincident. Note that the arrangement of the outer portion 84 and the minimum portion 81 is not limited to this example.

[0062] As described above, the minimum portion 81, the inner portion 82, the tapered portion 83, and the outer portion 84 are formed in a substantially quadrilateral shape extending substantially in the Z direction. Therefore, the width of the first portion 71 in the X direction is shorter than the width of the first portion 71 in the Z direction.

[0063] The lower surfaces 81a, 82a, 83a and the upper surfaces 81b, 82b, 83b may also be referred to as the short sides or short axes. The side surfaces 81c, 82c, 83c may also be referred to as the long sides or long axes. The X direction may also be referred to as the short side direction or short axis direction. The Z direction may also be referred to as the long side direction or long axis direction.

[0064] As shown in Figure 4, the outer portion 84 of the first portion 71 opens onto the second mounting surface 22 between the two valve mounting holes 32A and 32B. Therefore, the first portion 71 is located between the two valve mounting holes 32A and 32B. The two valve mounting holes 32A and 32B and the first portion 71 are aligned with a gap in the X direction.

[0065] The distance between the two valve mounting holes 32A and 32B is longer than the width of the first portion 71 in the X direction. On the other hand, the distance between the two valve mounting holes 32A and 32B is shorter than the width of the first portion 71 in the Z direction.

[0066] The minimum distance between the two valve mounting holes 32A and 32B may be shorter than the maximum width of the first portion 71 in the X direction. However, at each position in the Y direction, the distance between the two valve mounting holes 32A and 32B is longer than the width of the first portion 71 in the X direction. Therefore, the first portion 71 does not communicate with the valve mounting holes 32A and 32B.

[0067] As shown in Figure 6, the length of the minimum portion 81 in the Y direction is shorter than the length of the inner portion 82 in the Y direction, and also shorter than the length of the tapered portion 83 in the Y direction. Furthermore, the length of the tapered portion 83 in the Y direction is shorter than the length of the inner portion 82 in the Y direction.

[0068] As shown in Figure 3, the second portion 72 has a first extension 91 and a second extension 92. The first extension 91 and the second extension 92 are each part of the second portion 72 and are aligned in the Y direction.

[0069] The first extension portion 91 is connected to the inner portion 82 of the first portion 71. The first extension portion 91 is formed in a substantially arc shape extending around the central axis Ax. Note that the shape of the first extension portion 91 is not limited to this example.

[0070] The width of the first extension 91 in the X direction is greater than the width of the first portion 71 in the X direction. At a minimum, the width of the first extension 91 in the X direction is greater than the width of the inner portion 82 in the X direction. The passage area of ​​the first extension 91 is greater than the passage area of ​​the inner portion 82.

[0071] The first expansion portion 91 is located between the two reservoir mounting holes 34. The width of the first expansion portion 91 in the X direction is shorter than the distance between the two reservoir mounting holes 34. Therefore, the first expansion portion 91 does not communicate with the reservoir mounting holes 34.

[0072] The inner surface of the first expansion portion 91 has an inner circumferential surface 91a and a bottom surface 91b. The inner circumferential surface 91a is formed in a substantially arc-shaped cylindrical form. The bottom surface 91b is formed substantially flat and faces substantially in the +Y direction. The inner portion 82 of the first portion 71 opens to the bottom surface 91b. The inner circumferential surface 91a has a plane 91c. The plane 91c is provided at the end of the inner circumferential surface 91a in the -Z direction. The plane 91c is formed substantially flat and faces in the +Z direction.

[0073] The second expansion portion 92 is connected to the first expansion portion 91 and opens to the first mounting surface 21. The second expansion portion 92 is formed in a substantially arc shape extending around the central axis Ax. Note that the shape of the second expansion portion 92 is not limited to this example. The second expansion portion 92 communicates with the pump mounting hole 31.

[0074] The width of the second extension 92 in the X direction is greater than the width of the first extension 91 in the X direction. Therefore, the width of the second part 72 in the X direction is greater than the width of the first part 71 in the X direction. The passage area of ​​the second extension 92 is greater than the passage area of ​​the first extension 91. As shown in Figure 6, the length of the second extension 92 in the Y direction is shorter than the length of the first extension 91 in the Y direction.

[0075] Since the second portion 72 has a first extension portion 91 and a second extension portion 92, the width of the second portion 72 in the X direction increases in stages as it approaches the first mounting surface 21. Alternatively, the width of the second portion 72 in the X direction may increase gradually towards the first mounting surface 21.

[0076] As shown in Figure 2, the inner surface of the second expansion portion 92 has an inner circumferential surface 92a and a bottom surface 92b. The inner circumferential surface 92a is formed in a substantially arc-shaped cylindrical form. The bottom surface 92b is formed to be substantially flat and faces substantially in the +Y direction. The first expansion portion 91 opens into the bottom surface 92b. The inner circumferential surface 92a has a plane 92c. The plane 92c is provided at the end of the inner circumferential surface 92a in the -Z direction. The plane 92c is formed to be substantially flat and faces in the +Z direction.

[0077] The plane 91c of the first extension portion 91 and the plane 92c of the second extension portion 92 are continuous with each other. Furthermore, in the Z direction, the distance between the lower surface 82a of the inner portion 82 and the plane 91c of the first extension portion 91 is shorter than the distance between the upper surface 81b of the minimum portion 81 and the upper surface 82b of the inner portion 82.

[0078] In this embodiment, the distance between the lower surface 82a of the inner portion 82 and the plane 91c of the first expansion portion 91 in the Z direction is almost negligible. In other words, the lower surface 82a of the inner portion 82 and the plane 91c of the first expansion portion 91 are located on substantially the same plane. Therefore, the planes 91c and 92c of the first expansion portion 91 and the second expansion portion 92 are substantially continuous with the lower surfaces 81a, 82a, and 83a of the minimum portion 81, the inner portion 82, and the tapered portion 83.

[0079] The following describes some examples of how to manufacture the hydraulic control device 10. Note that the manufacturing method of the hydraulic control device 10 is not limited to the method described below, and other methods may be used. First, the pump 12, solenoid valve 16, pressure sensor 17, and reservoir 18 are mounted in the housing 11.

[0080] Next, the motor 13 is attached to the housing 11. At this time, the harness 15 protruding from the motor 13 is inserted into the through hole 36. The harness 15 is positioned, for example, so as to be spaced apart from the inner surface of the through hole 36, and is moved in the -Y direction to a predetermined position.

[0081] For example, when the tip 61c of the sleeve 61 reaches the inner part 82, the movement of the motor 13 and harness 15 is temporarily paused. Next, the motor 13 and harness 15 move in the -Z direction. As a result, the lower surface 61a of the sleeve 61 comes into contact with, or approaches, the lower surface 82a of the inner part 82. Since both the lower surfaces 61a and 82a are flat, they can stably support each other.

[0082] Next, the motor 13 and harness 15 are moved again in the -Y direction. At this time, the lower surface 82a of the inner portion 82 can guide the lower surface 61a of the sleeve 61. When the tip portion 61c of the sleeve 61 reaches the tapered portion 83, the inner surface of the tapered portion 83 guides the sleeve 61 toward the minimum portion 81.

[0083] The sleeve 61, guided by the inner surface of the tapered portion 83, is fitted into the minimum portion 81. The movement of the motor 13 and harness 15 is completed when the casing 41 of the motor 13 comes into contact with the first mounting surface 21. The casing 41 is attached to the first mounting surface 21, for example, by screws.

[0084] The terminals 62 of the harness 15 protrude outside the through-hole 36 through the outer portion 84. As shown in Figure 1, for example, the sealing material 100 is supplied to the minimum portion 81 and the outer portion 84. This allows the sealing material 100 to liquid-tightly seal the gap between the inner surface of the first portion 71 and the harness 15.

[0085] Next, the ECU 14 is mounted to the housing 11. This connects the terminals 62 of the harness 15 to the circuit board 52 of the ECU 14. Thus, the hydraulic control device 10 is manufactured.

[0086] Hydraulic fluid may leak from the pump 12 and motor 13. In this case, the hydraulic fluid flows into the second expansion section 92 which communicates with the pump mounting hole 31. The hydraulic control device 10 stores the hydraulic fluid in the space between the harness 15 and the inner surface of the through hole 36. The sealing materials 45,100 prevent the hydraulic fluid from leaking to the outside of the hydraulic control device 10.

[0087] In the hydraulic control device 10 according to the first embodiment described above, the harness 15 passes through a through hole 36 including a first portion 71. The harness 15 includes a plurality of terminals 62 because current flows through it to drive the motor 13. Since relatively large current flows through these terminals 62 to drive the motor 13, they tend to be large and prone to generating noise. On the other hand, in this embodiment, the width (length) of the first portion 71 in the X direction, where the two valve mounting holes 32A and 32B are arranged side by side, is shorter than the width of the first portion 71 in the Z direction, which is along the second mounting surface 22 and perpendicular to the X direction. Therefore, the hydraulic control device 10 of this embodiment can increase the number of terminals 62 of the harness 15 and increase the spacing between the terminals 62 without increasing the width of the through hole 36 in the X direction. Thus, the hydraulic control device 10 can maintain a predetermined distance between and around the terminals 62 while suppressing an increase in the distance between the two valve mounting holes 32A and 32B. Furthermore, compared to the case where the through-hole 36 is located between the pump mounting hole 31 and the valve mounting holes 32A and 32B, the valve mounting holes 32A and 32B can be located closer to the pump mounting hole 31. For example, for the reasons mentioned above, the hydraulic control device 10 can suppress the enlargement of the housing 11.

[0088] For example, if the motor is a DC brush motor, the harness has two terminals. Generally, the cross-section of a harness with two terminals is formed to be approximately circular. On the other hand, if the motor is a three-phase brushless motor, the harness has three terminals. If the cross-section of a harness with three terminals is formed to be approximately circular, the harness will be larger in the X direction. However, in this embodiment, the cross-section of the harness 15 and the cross-section of the first portion 71 through which the harness 15 passes are formed to be non-circular and elongated in the Z direction. Therefore, the hydraulic control device 10 of this embodiment can suppress the enlargement of the housing 11 even if the motor 13 is a three-phase brushless motor.

[0089] In the hydraulic control device 10 of this embodiment, the width of the first portion 71 in the X direction does not need to be changed according to the number of terminals 62 of the harness 15. Therefore, the housing 11 can be used for multiple types of hydraulic control devices 10 with different numbers of terminals 62. Specifically, the width of the first portion 71 in the Z direction is changed according to the number of terminals 62, while other parts of the housing 11 can be common to multiple types of hydraulic control devices 10. Accordingly, when multiple types of hydraulic control devices 10 are manufactured, the housing 11 can reduce the cost of the hydraulic control devices 10.

[0090] The distance between the two valve mounting holes 32A and 32B is shorter than the width of the first portion 71 in the Z direction. This allows the hydraulic control device 10 of this embodiment to suppress an increase in the size of the housing 11 in the X direction.

[0091] The harness 15 has multiple terminals 62 arranged in the Z direction. As a result, the hydraulic control device 10 of this embodiment can suppress the enlargement of the housing 11 in the X direction, regardless of the number of terminals 62.

[0092] The through-hole 36 has a second portion 72 that opens into the first mounting surface 21 and communicates with the pump mounting hole 31. The first portion 71 is positioned closer to the second mounting surface 22 than the second portion 72. The width of the second portion 72 in the X direction is greater than the width of the first portion 71 in the X direction. That is, the second portion 72 is wider than the first portion 71 and communicates with the pump mounting hole 31. Therefore, the second portion 72 can collect oil leaked from the pump 12 housed in the pump mounting hole 31 or from the motor 13 that drives the pump 12.

[0093] The width of the second portion 72 in the X direction increases as it approaches the first mounting surface 21. This allows the second portion 72 to increase its volume while maintaining distance between the second portion 72 and other holes such as the reservoir mounting hole 34.

[0094] The width of the second extension 92 in the X direction is greater than the width of the first extension 91 in the X direction. That is, the second portion 72 in the X direction becomes progressively longer as it approaches the first mounting surface 21. This allows the second portion 72 to be easily formed, for example, by milling.

[0095] The through-hole 36 has a minimum portion 81 with the smallest passage area in the first portion 71, and an inner portion 82 which is arranged parallel to the minimum portion 81 in the through-direction (Y direction) of the through-hole 36 and has a larger passage area than the minimum portion 81. The step difference between the minimum portion 81 and the inner portion 82 is greater on the side closer to the pump mounting hole 31 (distance between upper surfaces 81b and 82b) in the Z direction perpendicular to the Y direction than on the opposite side (distance between lower surfaces 81a and 82a). In other words, the minimum portion 81 is offset relative to the inner portion 82. For example, the harness 15 is inserted into the through-hole 36 along the portion of the inner surface of the through-hole 36 opposite to the pump mounting hole 31 in the Z direction perpendicular to the through-direction, that is, the portion opposite to the side with a large step difference (the side with a small step difference or no step difference). Therefore, when the harness 15 passes between the minimum portion 81 and the inner portion 82, it does not have to overcome a large step, and the hydraulic control device 10 can prevent the harness 15 from being damaged by riding over a large step. In addition, the passage area of ​​the inner portion 82 is larger than the passage area of ​​the minimum portion 81. In the hydraulic control device 10, since the inner portion 82 is offset toward the pump mounting hole 31 relative to the minimum portion 81, the inner portion 82 can be positioned closer to the pump mounting hole 31, thereby suppressing the need to enlarge the housing 11.

[0096] Furthermore, the first portion 71 has a tapered portion 83 that narrows from the inner portion 82 toward the minimum portion 81. The inner surface of the minimum portion 81 has a flat lower surface 81a and an upper surface 81b that is spaced apart from the lower surface 81a in the Z direction and faces the lower surface 81a, and is closer to the pump mounting hole 31 than the lower surface 81a. The inner surface of the inner portion 82 has a flat lower surface 82a and an upper surface 82b that is spaced apart from the lower surface 82a in the Z direction and faces the lower surface 82a, and is closer to the pump mounting hole 31 than the lower surface 82a. In the Z direction, the distance between the lower surface 81a and the lower surface 82a is shorter than the distance between the upper surface 81b and the upper surface 82b. That is, the minimum portion 81 is offset from the inner portion 82. When the harness 15 passes through the tapered portion 83, it may ride up onto the inner surface of the tapered portion 83. However, since the distance between the lower surfaces 81a and 82a in the Z direction is short, the height to which the harness 15 rides up onto the inner surface of the tapered portion 83 is relatively small. As a result, the hydraulic control device 10 of this embodiment can suppress damage to the harness 15 due to riding up. In addition, the passage area of ​​the inner portion 82 is larger than the passage area of ​​the minimum portion 81. In this embodiment, the inner portion 82 is biased toward the pump mounting hole 31 relative to the minimum portion 81. Therefore, the inner portion 82 is closer to the pump mounting hole 31 compared to the case where the inner portion 82 is biased toward the outside of the pump mounting hole 31 relative to the minimum portion 81. Consequently, the hydraulic control device 10 can suppress an increase in the size of the housing 11 in the Z direction.

[0097] The inner surface of the tapered portion 83 has a flat lower surface 83a that is continuous with the lower surface 81a of the minimum portion 81. Therefore, the hydraulic control device 10 of this embodiment can prevent the harness 15 from riding up onto the inner surface of the tapered portion 83 when the harness 15 passes through the tapered portion 83. Consequently, the hydraulic control device 10 can prevent the harness 15 from being damaged by riding up.

[0098] (Second embodiment) A second embodiment will be described below with reference to Figure 7. In the following description of the embodiments, components having the same function as those already described will be denoted by the same reference numerals as those previously described, and their description may be omitted. Furthermore, multiple components denoted by the same reference numerals do not necessarily share all functions and properties, and may have different functions and properties depending on the embodiment.

[0099] Figure 7 is a schematic exploded perspective view showing the housing 11 and harness 15 according to the second embodiment. As shown in Figure 7, the harness 15 of the second embodiment has a sleeve 200 instead of a sleeve 61. The sleeve 200 is equivalent to the sleeve 61 of the first embodiment, except as described below.

[0100] The sleeve 200 has a circular portion 201 and a non-circular portion 202. The circular portion 201 protrudes from the casing 41 of the motor 13 in a substantially -Y direction. The circular portion 201 has a substantially circular cross-section.

[0101] The non-circular portion 202 protrudes approximately in the -Y direction from the end of the circular portion 201 in the -Y direction. The cross-section of the non-circular portion 202 is formed in a substantially quadrilateral shape extending approximately in the Z direction and is substantially similar to the cross-section of the minimum portion 81. The non-circular portion 202 has a lower surface 61a, an upper surface 61b, and a tip portion 61c, similar to the sleeve 61 of the first embodiment.

[0102] The first portion 71 of the second embodiment has an inner portion 211 and a tapered portion 212 instead of an inner portion 82 and a tapered portion 83. The inner portion 211 is equivalent to the inner portion 82 of the first embodiment, except as described below. The tapered portion 212 is equivalent to the tapered portion 83 of the first embodiment, except as described below.

[0103] The cross-section of the inner portion 211 is formed in a substantially circular shape. The passage area of ​​the inner portion 211 is larger than the passage area of ​​the circular portion 201. The tapered portion 212 is provided between the minimum portion 81 and the inner portion 211. The tapered portion 212 narrows from the inner portion 211 toward the minimum portion 81. In the second embodiment, the center of the minimum portion 81 and the center of the inner portion 211 are substantially coincidental.

[0104] The hydraulic control device 10 of the second embodiment has an O-ring 220 instead of a sealing material 100. The O-ring 220 is interposed between the end of the circular portion 201 in the -Y direction and the inner surface of the tapered portion 212. As a result, the O-ring 220 liquid-tightly seals the first portion 71.

[0105] In the hydraulic control device 10 of the second embodiment described above, the inner portion 211 has a circular cross-section. The tapered portion 212 tapers from the inner portion 211 toward the minimum portion 81. The O-ring 220 is interposed between the harness 15 and the inner surface of the tapered portion 212, sealing the gap between the harness 15 and the inner surface of the tapered portion 212. As a result, the hydraulic control device 10 can utilize the O-ring 220, and the manufacturing process of the hydraulic control device 10 can be simplified.

[0106] In the embodiments described above, the cross-sections of the harness 15 and the through-hole 36 are formed in a substantially quadrilateral shape. However, the cross-sections of the harness 15 and the through-hole 36 may also have other shapes, such as being longer in one direction and shorter in another. For example, the cross-sections of the harness 15 and the through-hole 36 may be formed in an elliptical shape.

[0107] A hydraulic control device according to at least one embodiment described above includes, as an example, a pump, a motor for driving the pump, a housing having an outer surface, the housing having a first hole opening to a first surface of the outer surface facing the motor and housing the pump, and two second holes opening to the outer surface and spaced apart from the first hole, with the two second holes arranged spaced apart in a first direction, and a current supply unit through which a current for driving the motor flows, passing through a through hole that penetrates the housing and opens to the first surface and a second surface of the outer surface opposite to the first surface, the through hole having a first portion located between the two second holes, the width of the first portion in the first direction being shorter than the width of the first portion in a second direction that is along the second surface and perpendicular to the first direction. Generally, the current supply unit includes a plurality of conductors because a current for driving the motor flows through it. Because a relatively large current flows through the conductor in order to drive the motor, it tends to be large and prone to generating noise. On the other hand, in the hydraulic control device described above, the width of the first portion in the first direction where the two second holes are arranged side by side is shorter than the width of the first portion in the second direction which is along the second surface and perpendicular to the first direction. Therefore, the hydraulic control device can increase the number of conductors in the current supply section and increase the spacing between the conductors without increasing the width of the through-hole in the first direction. Consequently, the hydraulic control device can suppress an increase in the distance between the two second holes. In addition, the second hole can be positioned closer to the first hole compared to when the through-hole is positioned between the first and second holes. For example, for the reasons mentioned above, the hydraulic control device can suppress an increase in the size of the housing.

[0108] In the hydraulic control device described above, for example, the distance between the two second holes is shorter than the width of the first portion in the second direction. Therefore, for example, the hydraulic control device can suppress an increase in the size of the housing in the first direction.

[0109] In the above-described hydraulic control device, for example, the current supply unit has a plurality of conductors arranged in the second direction. Therefore, for example, the hydraulic control device can suppress the enlargement of the housing in the first direction, regardless of the number of conductors.

[0110] In the above-described hydraulic control device, for example, the through-hole has a second portion that opens to the first surface and communicates with the first hole, the first portion is provided closer to the second surface than the second portion, and the width of the second portion in the first direction is longer than the width of the first portion in the first direction. Therefore, for example, the second portion is wider than the first portion and communicates with the first hole. For this reason, the second portion can collect oil leaked from the pump housed in the first hole or from the motor that drives the pump.

[0111] In the above-described hydraulic control device, for example, the width of the second portion in the first direction increases as it approaches the first surface. Therefore, for example, the volume of the second portion can be increased while ensuring the distance between the second portion and other holes, such as the second hole.

[0112] In the hydraulic control device described above, as an example, the first part has a first portion having the smallest passage area, a second portion closer to the first surface than the first portion, and a tapered portion that narrows from the second portion toward the first portion. The inner surface of the first portion has a flat third surface and a fourth surface that is spaced apart from the third surface in a third direction facing the third surface and faces the third surface, and is closer to the first hole than the third surface. The inner surface of the second portion has a flat fifth surface and a sixth surface that is spaced apart from the fifth surface in a third direction and faces the fifth surface, and is closer to the first hole than the fifth surface. In the third direction, the distance between the third surface and the fifth surface is shorter than the distance between the fourth surface and the sixth surface. Therefore, as an example, the first part is offset from the second part. For example, the current supply unit is inserted into the through hole along the fifth surface. In this case, the current supply unit may ride up onto the inner surface of the tapered section as it passes through it. However, since the distance between the third surface and the fifth surface in the third direction is short, the height to which the current supply unit rides up onto the inner surface of the tapered section is relatively small. As a result, the hydraulic control device can prevent the current supply unit from being damaged by riding up. In addition, the passage area of ​​the second part is larger than the passage area of ​​the first part. In the hydraulic control device described above, since the second part is offset toward the first hole relative to the first part, an increase in the size of the housing in the third direction can be suppressed.

[0113] In the above-described hydraulic control device, for example, the inner surface of the tapered portion has a flat seventh surface that is continuous with the third surface. Therefore, for example, the hydraulic control device can prevent the current supply unit from riding up onto the inner surface of the tapered portion when the current supply unit passes through the tapered portion. Consequently, the hydraulic control device can prevent the current supply unit from being damaged by riding up.

[0114] In the above-described hydraulic control device, for example, the through-hole has a first portion having the smallest passage area in the first part, and a second portion arranged parallel to the first portion in the through-hole direction and having a larger passage area than the first portion. The step difference between the first portion and the second portion is greater on the side closer to the first hole in the direction perpendicular to the through-hole direction than on the opposite side. Therefore, for example, the first portion is biased relative to the second portion. For example, the current supply unit is inserted into the through-hole along the part of the inner circumferential surface of the through-hole that is opposite to the first hole in the direction perpendicular to the through-hole direction, that is, the side opposite to the side with a large step difference (the side with a small step difference or no step difference). Therefore, when the current supply unit passes between the first portion and the second portion, it does not have to overcome a large step difference, and the hydraulic control device can prevent the current supply unit from being damaged by riding up a large step difference. Also, the passage area of ​​the second portion is larger than the passage area of ​​the first portion. In the hydraulic control device described above, the second part is offset toward the first hole relative to the first part, so the second part can be positioned closer to the first hole, thereby suppressing an increase in the size of the housing.

[0115] In the above explanation, suppression is defined, for example, as preventing the occurrence of an event, effect, or influence, or reducing the degree of an event, effect, or influence.

[0116] Although embodiments of the present invention have been illustrated above, these embodiments and modifications are merely examples and are not intended to limit the scope of the invention. The above embodiments and modifications can be implemented in various other forms, and various omissions, substitutions, combinations, and changes can be made without departing from the spirit of the invention. Furthermore, the configurations and shapes of each embodiment and modification can be partially replaced. [Explanation of symbols]

[0117] 10...Hydraulic control device, 11...Housing, 12...Pump, 13...Motor, 15...Harness (power supply unit), 20...Outer surface, 21...First mounting surface (first surface), 22...Second mounting surface (second surface), 31...Pump mounting hole (first hole), 32A, 32B...Valve mounting hole (second hole), 36...Through hole, 62...Terminal (conductor), 71...First part, 72...Second part, 81...Minimum part (first part), 81a...Bottom surface (third surface), 81b...Top surface (fourth surface), 82...Inner part (second part), 82a...Bottom surface (fifth surface), 82b...Top surface (sixth surface), 83...Tapered part, 83a...Bottom surface (seventh surface).

Claims

1. Pump and A motor that drives the aforementioned pump, A housing having an outer surface, with a first hole opening on a first surface of the outer surface facing the motor and housing the pump, and two second holes opening on the outer surface and spaced apart from the first hole, housing solenoid valves, wherein the two second holes are arranged with a gap between them in the first direction, A current supply unit through which a current for driving the motor flows passes through a through-hole that penetrates the housing and opens to the first surface and the second surface located on the opposite side of the first surface on the outer surface, It is equipped with, The through hole has a first portion located between the two second holes, The width of the first portion in the first direction is shorter than the width of the first portion in the second direction which is along the second surface and perpendicular to the first direction. Hydraulic pressure control device.

2. The distance between the two second holes is shorter than the width of the first portion in the second direction. A hydraulic pressure control device according to claim 1.

3. The current supply unit has a plurality of conductors arranged in the second direction, A hydraulic pressure control device according to claim 1 or claim 2.

4. The through hole has a second portion that opens to the first surface and communicates with the first hole, and the first portion is provided closer to the second surface than the second portion. The width of the second portion in the first direction is longer than the width of the first portion in the first direction. A hydraulic pressure control device according to any one of claims 1 to 3.

5. The width of the second portion in the first direction increases toward the first surface. The hydraulic control device according to claim 4.

6. The first portion has a first part having the smallest passage area, a second part closer to the first surface than the first part, and a tapered portion that narrows from the second part toward the first part. The inner surface of the first portion has a flat third surface and a fourth surface that is spaced apart from the third surface in a third direction which is the direction facing the third surface, and faces the third surface, and is closer to the first hole than the third surface. The inner surface of the second portion has a flat fifth surface and a sixth surface that is spaced apart from the fifth surface in the third direction, facing the fifth surface, and is closer to the first hole than the fifth surface. In the third direction, the distance between the third surface and the fifth surface is shorter than the distance between the fourth surface and the sixth surface. A hydraulic control device according to any one of claims 1 to 5.

7. The inner surface of the tapered portion has a flat seventh surface that is continuous with the third surface. A hydraulic pressure control device according to claim 6.

8. The through-hole has a first portion having the smallest passage area in the first part, and a second portion that is arranged parallel to the first portion in the direction of passage through the through-hole and has a larger passage area than the first portion. The step between the first portion and the second portion is greater on the side closer to the first hole in a direction perpendicular to the through-direction than on the opposite side. A hydraulic control device according to any one of claims 1 to 5.

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